yes
There is one year, users were "only" number of 500 million, now they come to exceed 800 million, as Jan Koum says on his Facebook.
We are left with the most unifying mail application. Even the Facebook chat system is below, although with 600 million users. Is a good investment for Mark Zuckeberg.
Zuckerberg said that WhatsApp was initially make the back of Facebook, but that was before his meteoric rise. In January, he reiterated his remarks, emphasizing that the application will be a major contributor in the business of Facebook.
What I said about instant messaging was too soon. We are where Facebook was in 2006 or 2007, and at that time he was a consumer product. There was no business in the ecosystem .